Monday, December 26, 2011

AUTOMATED ATTENDANCE SYSTEM PROJECT FREE DOWNLOAD

‘AUTOMATED ATTENDANCE SYSTEM
’ is designed to collect and manage student’s attendance records from
RFID devices installed in a class rooms. Based on the verification of
student identification at the entrances system, the RFID tag can be
embedded in the ID card of the individual. First to activate a new
session(hour) the teacher swipes her RFID tag this marks a new
attendance session during which the students can swipe once to increment
their attendance. The RFID module operate in 125Khz range, when a tag
passes through its vicinity, the module senses its presence and extracts
its unique serial number and passes this code into microcontroller
which matches the code to the correct person and increments the
attendance of the particular person.

The two major problems faced by
organizations are time consuming manual attendance and wastage of
electrical power. Our project is going to solve these problems by using
RFID technology. The project is designed to store up to 50 card IDs but
it is easily scalable up to 65000 card IDs but for that it requires
external memory. Radio Frequency Identification (RFID) is an automatic
identification method, relying on storing and remotely retrieving data
using devices called RFID tags or transponders. So the RFID is a
wireless identification.

Normally the RFID system comprises of
two main parts: RFID Reader and RFID Tag. RFID Reader is an integrated
or passive network which is used to interrogate information from RFID
tag. The RFID Reader may consist of antenna, filters, modulator,
demodulator, coupler and a micro processor.

AUTOMATED ATTENDANCE SYSTEM

COMPONENTS OF SYSTEM

The figure below shows the basic block diagram of the AUTOMATED ATTENDANCE USING RFID. It contains the following blocks:

1. RFID reader

2. RFID tags

3. LCD display

4. Microcontroller

5.MAX232

6. Power supply unit

RFID READER

A reader (now more
typically referred to as an RFID interrogator) is basically a radio
frequency (RF) transmitter and receiver, controlled by a microprocessor
or digital signal processor. The reader, using an attached antenna,
captures data from tags, then passes the data to the controller for
processing. The reader decodes the data encoded in the tags integrated
circuit (silicon chip) and the data is passed to the microcontroller for
processing.

RFID TAGS

Tags also sometimes
are called “transponders”. RFID tags can come in many forms and sizes.
Some can be as small as a grain of rice. Data is stored in the IC and
transmitted through. The antenna to a reader. The two commonly used RFID
Transponders are Active (that do contain an internal battery power
source that powers the tags chip) and Passive (that do not have an
internal power source, but are externally powered typical from the
reader) RFID Transponders.

LCD DISPLAY

The display support
2X16 characters, which means, the LCD can support 2 lines on the display
and each line can display up to 16 characters which is relevant as the
only essential output to be displayed is the student’s name and ID.
Besides LCD Display, the output is displayed on LCD. The diagram of LCD
display is shown in Figure and the detailed connections of the LCD is
shown in table.

MICROCONTROLLER

The microcontroller
used is PIC 16F877A. Microcontroller is a general-purpose device, but
one that is meeting to read performs limited calculations on data, and
contained is its environ based on these calculations. The prime use, of
Microcontroller is to control the operation of a machine using a fixed
program that is stored in and does not change over the lifetime of the
system.

MAX232

The MAX232 is an
integrated circuit that converts signals from an RS-232 serial port to
signals suitable for use in TTL compatible digital logic circuits. The
MAX232 is a dual driver/receiver and typically converts the RX, TX, CTS
and RTS signals.

POWER SUPPLY

These form an important equipment of any
Electronics laboratory. Power supplies are essential for the testing
and implementation of any useful electronic circuit. If power supplies
are not available then the only way to provide power to a circuit is the
battery. For long-term use and frequent manipulation these are not
feasible. More over these are not as flexible as modern day power
supplies. They do not provide for overload protection and thermal
protection.

circuit diagaram

CIRCUIT DIAGRAM DESCRIPTION

The circuit below shows the AUTOMATED ATTENDANCE USING RFID. It contains

1. RFID reader

2. RFID tags

3. LCD display

4. Microcontroller

5.MAX232

6. Power supply unit

CONCLUSION

This project is based on
microcontrollers. As this is based on AT89S51 which is a commonly used
microcontroller, the control and programming is quite easy. This is just
a humble effort to produce a prototype for a device which helps in
keeping an exact record of student attendance using RFIDs module. Using
this device, we can easily detect the difference in power withdrawal of
RFID tags and it is user friendly. This system can be easily installed
any location where a 220 v power supply is available.

Our project has been a humble
effort to produce a prototype for a device which helps in keeping an
exact record of student attendance using RFIDs module , and we believe
our device will find use in various day to day fields.

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